TW304204B - - Google Patents

Description

A 7 B7 Printed by the Employees ’Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of the invention (1) Invention scope The invention relates to a liquid crystal composition for liquid crystal displays, in particular, to a TN (twisted nematic) mode Or STN (Super Twisted Nematic) mode display device used for liquid crystal composition, also relates to a liquid crystal display device using the composition. Hair_back length At present, display devices using liquid crystal are widely used in watches, electronic computers, etc. When driving the liquid crystal display device, the optical anisotropy and dielectric anisotropy of the liquid crystal substance in the device are used. The liquid crystal phase includes a nematic liquid crystal phase (-, liquid crystal phase and cholesteric liquid crystal phase. Among such liquid crystal phases, the nematic phase is most commonly used in actual liquid crystal display devices. The display modes used in liquid crystal displays include TN (twisted nematic) Mode, STN (Super Twisted Nematic) mode, DS (Dynamic Scattering) mode, guest-host mode, ECB (Electrically Controlled Birefringence) mode, etc. Many liquid crystal compounds are known and include and are still in the research stage before. Currently, there is no liquid crystal substance that can be used alone in a liquid crystal cell. The reasons are as follows. The liquid crystal substance for display devices has the widest possible mesogenic temperature range, including the room temperature of the display devices most commonly used. It also needs to be sufficiently stable to the environmental impacts associated with it, and must have satisfactory physical properties required by the display material. However, no single liquid crystal substance that satisfies such conditions has yet been found. Therefore, the current preparation contains multiple liquid crystal substances and Liquid crystal composition of non-essential non-liquid crystal substance, which is actually used as a display material. (Please read the precautions on the back before filling this page),-'口 Γ

X This paper standard uses the Chinese National Standard (CNS) Μ specifications (210X297 mm) 304204 at Β7 Printed by the Beigong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Invention description (2) The liquid crystal composition needs to be applied to it Common water, light, heat, air, etc. in the environment are chemically stable, and also need to resist electric and magnetic fields. In addition, the liquid crystal compounds to be mixed into a composition need to have individual, mutual and chemical stability in the environment in which they are used. The liquid crystal composition needs to have appropriate optical anisotropy and dielectric anisotropy depending on the display mode and device used, as well as appropriate viscosity and appropriate worm temperature range. The most commonly used display modes currently include TN < --- (twisted nematic) mode with a twist angle of 90 degrees and S TN (super twisted nematic) with a twist angle between 180 degrees and 270 degrees ) Mode, which uses the optical activity and birefringence of liquid crystal individually. As for the liquid crystal display devices used in such systems recently, the most important ones are: (1) To achieve low driving voltage and low energy loss; (2) To minimize the temperature dependence of the electro-optical characteristics of liquid crystal materials: and (3 ) Achieve high-speed response, etc. To satisfy such matters, the liquid crystal material used in the liquid crystal display device needs to have a satisfactory limit voltage, optical anisotropy, viscosity, and the like. Reducing --- The limit voltage can achieve low driving voltage and low energy consumption, and reducing the dependency of the limit voltage can solve the problem of insufficient contrast of the display device in the actual temperature range, and can also eliminate faults such as crosstalk. In a display device, depending on factors such as the display mode applied to the device, the product of the optical anisotropy (△) of the liquid crystal material filled in the device and the thickness of the device (d〃 τη) is defined as Reservation value. In this case (please read the precautions on the back before filling this page) Γ • 言

I This paper standard is universal Chinese National Standard (CNS) Α4 specification (210Χ297 mm) Printed by Aigong Consumer Cooperative, Central Standards Bureau, Ministry of Economic Affairs A7 -___ Five, Invention Instructions (3), when using large liquid crystal materials , Value may be small. The reaction time (r) in the display device is proportional to the viscosity (77) of the liquid crystal material to be placed in the device, and proportional to the square of the thickness (d) of the element containing the material. Therefore, if the _ and jzJ® are small, the work value is greatly reduced ¡and thus a quick response is achieved. Therefore, a liquid crystal composition having a low limit m pressure with a reduced temperature dependence, a suitably improved optical anisotropy, and a low viscosity is obtained. Invention Maple Shu The object of the present invention is to provide a liquid crystal material for a liquid crystal display device which can be driven at a low voltage, and the driving voltage is hardly affected by the ambient temperature. Another object of the present invention is to provide a liquid crystal composition having suitably improved optical anisotropy and low viscosity. Therefore, the present invention provides a liquid crystal composition, each of which includes a first r-- component composed of at least one compound selected from the following compounds of the general formula (I), and at least one selected from the following The second component of the compound (II) in the compound of formula (II) is composed of at least one compound selected from compounds of the following general formula (V Γ / 1) to _1 „3 ^) The third component composed of ___________, and the fourth component composed of at least one compound selected from the following general formula (VI ') and (VII) compounds. Rq—O—CH2—CN (I ) Where Ri represents an alkyl group with 1 to 8 carbon atoms; n represents 0 or 1. This paper scale applies to the Chinese National Standard (CNS) 84 specification (210X 297 mm) (please read the precautions on the back first (Fill in this page) Γ Pack. Order V. Description of Invention (4) A7 B7

Ruler 2 and Ruler 3 each have an alkyl group of 1 to 8 carbon atoms: L represents F or Η; Q represents a CH2CH2 — or single bond. '_, X R4- ~ + < E > ^ rA1 ~ Z1 R5—A2—Z2f-A3—Z3-^^ (^ ~ sR6-K «> -Z4-VA4-Z5-^-s (III) (IV) (please read the precautions on the back before filling in this page) Γ loaded. Printed by the Central Sample Bureau of the Ministry of Economic Affairs of the Belgian Consumer Cooperation (V). In the formula (III), the R4 table has 1 to 8 Carbon atom alkyl, where one CH2 group can be substituted by oxygen atom or _CH = CH —; m table 0 or 1; Aα table trans-1,4-cyclohexyl, 1,4-phenylene or Trans_1,3-dioxane-2,5-diyl: 21 Table 1 (: 00-or single bond; X table F or Η, the prerequisite is that when Zt is a COO —, X is Η: In formula (IV), R5 represents an alkyl group having 1 to 8 carbon atoms; p represents 0 or 1; A2 represents trans-1, 4-cyclohexyl, 1, 4-phenylene or pyrimidine-2, 5 -Diyl: A3 table trans-1,4-cyclohexyl or 1'4-phenylene; Z2 table—CH2CH2—, —CH = CH—or single bond; Z3 table—C00—or single bond; T Table F or H: S Table F or C5: In the formula (V), R6 table has 1 to 8 sets of paper size, using the Chinese Zhou Family Standard (CNS) A4 specification (210 X 297 mm) 3ϋ · 4: 77 Printed by the Ministry of Standards Bureau Beigong Consumer Cooperatives, description of inventions (5) Courtyard of carbon atoms; q table 0 or 1; A 4 table trans-1,4-cyclohexyl or 1,4-phenylene : Z 4 represents a C Η 4 C Η 2-9 -CH = C Η-or single bond; Z 5 represents a C Η 2 C Η 2-or single bond; S represents F or C R7 A5 ~ ~ A7 ~ R8 (VI) R9 ~ < §) —C2 ^ ~ R10 (VII) In formula (VI), R 7 represents an alkyl group having 1 to 8 carbon atoms; R 8 represents an alkane having 1 to 8 carbon atoms Group or alkoxy group or an alkoxymethyl group having 2 to 8 carbon atoms; r table 0 or 1 ;; A 5 table trans-1, 4-cyclohexyl, 1, 4, 4-phenylene or pyrimidine-2 , 5- _ diyl: A 6 and A 7 each trans- 1,4-cyclohexyl or 1 ^ 4-phenyl phenyl \ Z 6 Table 1 C: 0 0-• or single bond; formula (VII) In the table, R 9 represents an alkyl group with 1 to 8 carbon atoms: R i. It represents an alkyl or alkoxy group with 1 to 8 carbon atoms. Detailed Description of the Invention In the liquid crystal composition of the present invention, when the third group In the formula (III), A i is trans-1, 3-dipyridine-2, 5-diyl or In the same formula (I V), when eight 2 is pyrimidine one 2, 5-two bases, then A! Or A 2 (please read the note Ϋ on the back before filling in this page) Γ Binding. Ordering The following orientation is preferred. The size of this paper is universal Chinese National Standard (CNS) Α4 specification (210Χ297mm) A7 B7 5. Description of the invention (6)

In the liquid crystal composition of the present invention, when the fourth component formula (V)

When As is pyrimidine-2,5-diyl, A5 is preferably oriented as described above. As for the first component in the liquid crystal composition of the present invention, compounds having the following formulae (I a) and (I. b) are preferred;

F

—〇- ^ 2-^) COO—CN (la)

Rt —0—cH2-H (i ^ g ^ -coo- ^ Q

(lb) (Please read the precautions on the back before filling out this page)-Installation · Printed by the Central Standardization Bureau of the Ministry of Economic Affairs, Mgong Consumer Cooperatives / /

1 indicates an alkyl group having 1 to 8 carbon atoms. This reduces the ultimate electrical dependence of the liquid crystal mixture containing the other. In the liquid crystal composition of the present invention, the mixing ratio of the total weight of the first to fourth components is preferably 0% by weight. If the first component is included, the degree of reduction of the limit voltage of the liquid crystal composition. The degree of decrease of the temperature dependence of the limit voltage is insufficient for the purpose of the present invention. Therefore, it is not ideal. The mixing ratio of one component is higher than 50% by weight, which is too large. Therefore, it is not ideal. The second component of the finished product, preferably the compound of the following formula (): This paper scale is applicable to the Chinese National Standard (CNS) Α4 specification (210Χ 297 mm) set 304204 at B7. Consumer Cooperative Insignia V. Description of Invention (7) R11 R11 C ~ C ~ (§) ~ RT 2 (lib) 'In this general formula, Ru and R12 each have an alkyl group of 1 to 8 carbon atoms. Such compounds are particularly useful for improving the clearing point of liquid crystal mixtures containing them to increase their optical anisotropy and reduce viscosity. In the liquid crystal composition of the present invention, the mixing of the second component with respect to the total weight of the first to fourth components is preferably 3 to 35 weight%, more preferably 1 to 25 weight y. If the mixing ratio of the second component is less than 3% by weight, the optical anisotropy of the liquid crystal composition cannot be sufficiently enlarged, or the viscosity of the other cannot be sufficiently reduced. Therefore, it is not ideal. On the other hand, if the mixing ratio of the second component is higher than 35 wt%, the limit voltage of the liquid crystal composition increases. Therefore, it is not ideal. _________________________________....--As for the compound of formula (I I I) used in the third component of the liquid crystal composition of the present invention, the following formulas (I I I a) to (I I I h) are preferred:

〇y-c ^ c- ^ gy-

R 12 (Ha) (Read the precautions on the back before filling in this book) Γ 装 装, ιτ The paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) -10-C7 D7 5. Creation Instructions (8) r ~ KEMq) — (Ilia) R—〇—CH2- ^ F >-< 5) —CN (nib) R—CH = CH—CH2—CH2 ~ ^ h)-(Q > —CN (IIIc) R ^ SM ^ ~ CN (IHd) rK ^ ME ^ §) -cn (IHe) r- ^ ®KEm ^ -cn (Illf) (Illg) R- < 〇)-{§ ^- cn (IHh) ^^^^ 1 ^^ — ^ 1 H ^^^^ 1 mu B ^ i (Please read the precautions on the back of Luo before filling this page) In this type of general formula, R table has 1 For an alkyl group with up to 8 carbon atoms, the prerequisite is that R in formula (IIIC) may also be a hydrogen atom. As for the compound of formula 1 IV) used in the third component of the liquid crystal composition of the present invention, those of general formula (IVa) to (IVo) are preferred: ~ COO——F (IVa) (IVb) r_ ^ Eh〇m§) ~ 'f (IVc) R- ¥ ^ h)-< ^ h)-COO— < 〇) —F (IVd) This paper scale is suitable for the poor and difficult home ladder standard (CNS > A4 present grid (210X297mm) -11- C7 D7 printed by the employee consumer cooperative of the Central Bureau of Economic Development of the Ministry of Economic Affairs

c

In)? Vo) v (v, IV (1 (1 (1 V. Creation description (9) (IVe) (IVf) (IVg) (IVh) (Work Vi) r ^)-ch2ch2- ^ h >-< ^ f (IVj) (IVk) (工 VI) This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X 297mm) -12-304204 C7 D7 5. Creation instructions (10) In this general formula , R represents an alkyl group having 1 to 8 carbon atoms. As for the formula (v compound) used in the third component of the liquid crystal composition of the present invention, preferably the following formulas (Va) to (V f): (Va )

F (Vb) F R ^ H) -yT > -CH2

(Vc)

r- ^ P > —ch2ch2 (Vd)

(Ve) R- < 2 >-Printed by Beigong Consumer Cooperative of Central Bureau of Economics, Ministry of Economic Affairs

CH = CH

(Vf) In this general formula, R represents an alkyl group having 1 to 8 carbon atoms. Compounds of formula (III), (IV) and (V) used in the third component of the liquid crystal composition of the present invention all have extremely positive dielectric anisotropy and are mainly used to effectively control the limiting voltage of the composition . In the liquid crystal composition of the present invention, the third component containing one or more (III), (IV) and (V) compounds relative to the total weight of the first to fourth components is suitable for China National Standard (CNS) A4 specification (210X297mm) -13-(VIA) C7 D7 5. Creation Instructions (U) The mixing ratio is preferably 10 to 60% by weight, more preferably 15 to 40% by weight- ------------—............................... If the mixing ratio of the third component is greater than 60% by weight, the viscosity of the composition is too unfavorable. Among the compounds of formula (VI) used in the fourth component of the liquid crystal composition of the present invention, the compounds of the following general formula (VIA) are preferred: R14 ~ -K§HlTR15 where R 14 has 1 to 8 carbon atoms Alkyl: R15 represents an alkyl or alkoxy group having 1 to 8 carbon atoms, or an alkoxymethyl group having 2 to 8 carbon atoms; v and w each represent 0 or 1, with the prerequisites being v and When either of w is 0, the other is 1. Among the compounds of formula (VI) and (VI I), the best ones are the following formulas (Via) to (VIh). And (VI la): Please read the precautions on the back and then fill out this page. Printed by industrial and consumer cooperatives R—R · (Via) R—0—CH2—R, (VIb) R ~ (^) ~ · ~ R '(Vic) • R— (F) —CCDO— < ^ 〇) —R '(VId) (Vie) R— ~~ R' --------- (Vlf) This paper scale uses the Chinese National Standard (CNS) Α4 specification (210Χ297mm) _ 14-5 , Creation Instructions (12)

R— (〇) —C ^ c— (〇) —R ′ In this general formula, the R gauge has the anisotropy used by the fourth component of 1 to 8 carbon atoms, and is mainly used for control The viscosity. In the liquid crystal composition of the present invention, the mixing of the total weight of the fourth compound of VII) is preferably 10 weights; 1:%. If the viscosity of the fourth component is too high. Therefore, it is not ideal. The limit voltage of the composition becomes higher. C7 D7 (VIg) (VIh) (Vila) has an alkyl group of 1 to 8 carbon atoms; R1 alkyl group or alkoxy group. The liquid crystal composition of the present invention has a clear point of a negative or weakly positive dielectric isotropic composition, optical anisotropy, and contains one or more formulas (VI) and (components relative to the first to fourth Composition to 60% by weight, more preferably 20 to 50 · "豸-(Please read the precautions on the back of the economy before filling in this page), τ ^ Printed by the Jeonggong Consumer Cooperative of the Central Bureau of Economic Development, Ministry of Economic Affairs The following is a description of preferred (1) a liquid crystal composition formula (I) and (Ib) component of the present invention, which is composed of at least one compound selected from the above compounds. The above formulas (III a) to (IV 〇) and (V a) When the ratio is less than 10% by weight, the composition. When the mixing ratio is more than 60% by weight, it is also not ideal. Examples, substances, which consist of at least one compound selected from the above compounds The first component of the general formulas (Ila) and (lib) is composed of at least one compound selected from (III h), (IV a) to (V g) compounds. Accurate in troubled countries (0 milk> 8 4 specifications (2 丨 0 father 297 mm) _15 Ministry of Economic Affairs Cooperative cooperative printing C7 D7 5. The third component of the composition description (13), and the fourth component consisting of at least one compound selected from the compounds of the above formulas (VI a) to (VIh) and (VI la) (2) The liquid crystal composition according to the first item above, wherein the first, second, third and fourth components are mixed with the total weight of the four components The ratios are 3 to 50%, 3 to 35%, 10 to 60% and 10 to 60% (all by weight). (3) The liquid crystal composition as described in the above item (1), Among them, the mixing ratio of the first, second, third and fourth components relative to the total weight of the four components is 5 to 30%, 5 to 25%, 1 5 to 4 0% and 20 to 50% (both by weight). Other examples of the present invention are: (4) A liquid crystal display device containing the liquid crystal composition according to any one of the above items (1) to (3) The compounds of formula (I) to (VII) used in the present invention are known and prepared according to the methods described in the literature. Therefore, those skilled in the art can easily prepare such compounds by methods derived from related prior art . For example, the compound of formula (I a) and the compound of formula (I b) are individually disclosed in Japanese Patent Laid-Open Application Nos. 6 0 — 1 8 4 0 6 0 and 6 1 — 3 3 5 1 9; and formula (II ) Compounds are disclosed in Japanese Patent Laid-Open Application No. 63-152334. Compounds of formula (II la) are disclosed in Japanese Patent Laid-open Application Nos. 5 8-1 0 5 5 2 and 5 9-1 5 2 3 6 2; Formula (VI a) in Japanese Patent Application Nos. 59-70624 and 60-16940: Formula (This paper music standard is applicable to China ’s National Standard Rate (CNS) Α4 specification (210Χ297mm) η ---- " — (Please read the precautions on the back of the economy before filling in this I) Order 304204 C7 D7 5. Creation Instructions (14) VI b) in Japanese Patent Publication Application No. 5 8 — 1 6 7 5 3 5; and The formula (VIe) is in Japanese Patent Publication Application No. 57-1 6 5 3 2 8. The liquid crystal composition of the present invention can be prepared by a known method. Generally, a method of dissolving the constituent components at a temperature higher than the clearing point can be used. The liquid crystal composition of the present invention may contain appropriate additives to modify the composition in accordance with the intended use. By this modification, the composition can be optimized with respect to the intended use. The additive is well known to those skilled in the art and is detailed in the literature. Commonly used additives include non-mirror dopants, which induce a helical structure in the liquid crystal in the composition to adjust the twist angle of the liquid crystal to a necessary value, while preventing the reverse twist of the liquid crystal. Printed by the Consumer Labor Cooperative of the Central Bureau of Economic Affairs of the Ministry of Economic Affairs (please read _ the precautions on the back and then fill out this page) The liquid crystal composition of the present invention may contain dichroic dyes, such as cyanine, styryl derivatives, even Nitrogen compounds, methylimines, azo-oxide compounds, dauranone, Mquinone and tetrazine derivatives. The liquid crystal composition containing any of the dyes can be used as a material for a guest-host (GH) horizontal device. The liquid crystal composition of the present invention can also be used as a material for ^ N ^ OA Pj made by nematic liquid IgjH dagger, and can also be used in polymer dispersed liquid crystal display (CD) devices, such as polymer network liquid crystal display (LCD) device, which is made by forming a three-dimensional network polymer structure in liquid crystal. In addition, the liquid crystal composition of the present invention can also be used as materials for electronically controlled birefringence (HC B) mode devices and dynamic (DS,) mode devices. The following examples and comparative examples do not limit the scope of the present invention, but are used for more The present invention is specifically described. In the following example, the transmittance reaches saturation value of 10 ^ Paper wave scale using the Chinese National Standard (CNS) 84 specifications (210X297 mm) -17-~ C7 D7 V. Creation instructions (15)% The voltage is called the limit voltage and is represented by Vi 〇. The parameter indicating the temperature dependence of the limit voltage is defined by the following formula, in which the light transmittance is measured in a direction perpendicular to the surface of the device. v10 (〇r)-Vin (5〇r) [V1〇 (〇 ° C) + V1〇 (5〇r)] / 2 5〇r-〇eC Commercial liquid crystal product ZLI — 1 1 3 2 Point 7.2 .4 ° C, the viscosity at 20 ° C is jm P a .s, the optical anisotropy at 2 5 ° C is 0 ^ _ 丄, the limit voltage is 1. 78V, < · -------.... and β = 0 · 58 (% / ° C) ° r— One Example 1: A liquid crystal composition composed of the following compounds was prepared. ^^ 1 ^^^ 1 nn m · n ^ i nn In-J, • (0¾ (· Please read i * · Notes on the back before filling in this page) 100 < 5 (% / r) Central Ministry of Economic Affairs Printed by Chess Pre-bureau Consumer Cooperative

5% 10%

% This paper scale is applicable to the Chinese national rubbing rate (CNS) A4 specification (210X297mm) -18-V. Creation instructions (16) C7 D7 C3H7- < »H§ > -CN C5H11 ^ SH2) -CN C3H7- < EME ^ -C4H9 C3H7_KE) ~ ^ 2! S_〇—C2H5 C3H7- > (^ H < 2Hg ^ ~ CH3 C3H7KEKE > -H ©) ^ C3H7 C2H5 ~ ^ 5) ~~ C = C—-CH3 C3H7-4 (H ^ -CH2CH2- ^ g) -CsC-^ @ ^-C2H5 c3h7- ^ F > -ch2ch2- < 〇) —c ^ c ^ g ^ -c3H7 C3H7 — ^ > -CH2CH2- < ^)-C C- < g > -C4H9 The clear point of the composition is 3., The viscosity at 20 ° C. 3 m Pa. 3, at 25 ° (: optical Anisotropy V. The limit of the composition-) ·-said. It is known that £ · 1 3 9 and the temperature dependence of the limit voltage 1 i is β gas 0...... r Λ Printed by Beigong Consumer Cooperative of the Central Bureau of Samples of the Ministry of Economic Affairs. 0,3 3 (% / ° C-1 Viscosity of the liquid crystal composition, the limit voltage and significantly lower than the control oscillating 1 [Control value of the crystal composition / and The optical anisotropy of ^^ is only slightly greater than 1 ^. Therefore, the known example Λ liquid crystal composition has good properties for display devices: Example 2: Preparation of a liquid crystal composition composed of the following compounds on paper scale Use the Chinese Standard for Sleepy Family (CNS) A4 Specification (210X297mm) -19-V. Creation Instructions (17)

Cl Ό7 The Central Bureau of Standards of the Ministry of Economic Affairs impresses C2H5-〇_CH2- ^ ~ C〇〇_ < ^ _ CN 10% c3h7—〇—ch2-10% C3H7-KEHSH§) ~ CN 8% 'c3h7 -< «M« > ^-cn- 7% c3h7- < hHQ > -cn 10% ch3—〇—C3H7 10% ch3—ο—〇η2- ^ η ^-^ Τ) -C5H-,- , 5% C3H7 ~ ^ (^ ~ (Q) ~~ 0 '~ C2H5 15% C3H7 7% c3h7-^ (h ^-(^ — c = c- < Q > —c2h5 6% c3h7- ^ Vh (^ —C = c— (Q > —c3h7 6% C3H7-^) ^-< ^ — C4Hg 6% (please read the precautions on the back before filling in this page) Γ 装 · -a The composition is clear Net ° c, viscosity at 2 o ° c 2 3 > 2mPa. 3, at 25 ° (: optical anisotropy c- · 0.10.1 3 6, limit voltage 1.50 V, and β = 0 · 26 (% ^ ........... ^ ~ ------ / 0C). This paper size is applicable to China National Carriage (CNS) A4C grid (210X297mm) _ go-

Cl D7 Printed by Beigong Consumer Cooperative, Central Bureau of Standards, Ministry of Economic Affairs 5. Creation Instructions (18) Example 3: Preparation of a liquid crystal composition consisting of the following compounds. C3H7—0—CH2- < g ^ -COO- < ^-CN 7 V CH3—0—CH2-«(T > — ^) — coo — (^ ― CN 4% C2H5—0—CH2- < (h)-^ 〇) —COO—CN 4% ch3—o—ch2-^ (h) — < §) —CN 8% 5% 5% 5% shii- < EKEh ^ -f 5%. One C2H5 7% C3H7- < EKE > -C4H9, 10% c3h7- ^ h) -coo ^ (g) -o-c4h9 5% c3h7- ^ h) -000- (〇) -o-c5h1 1 5% C2H5 ~ C ~ C—〇—CH3 10% This paper size uses the Chinese National Standard (CNS) A4 wash grid (210X 297mm). Please read first · Notes on the back J binding page -21-Side C7- __D7 5. Creation Instructions (19) C3H7- < H)-^-C ^ C- < g ^ -C2H5 5% C3H7- < H >-< ^-C ^ C- < § >- C3H7 5% 丨 C3H7 ~ XZ) -CH2CH2--csc-h @) ~~ C2H5 5% C3H7_K5) ~ CH2CH2'H © > ~ C = C * ^ 2) _C3H7 5% 9, the viscosity at 2 0 ° C 2 '1. One "m P a. S, the optical anisotropy at 25 ° C is 〇. 14 7, the limiting voltage 1 ^ L 8 V, and tf = 0 · 22 (% (.. ....., .. / ° C). Example 4: (Please read the precautions on the back of the fund before filling this page)

T-Pack. Ordered by the Central Bureau of Standards of the Ministry of Economic Affairs. Employee's consumer cooperation Du-printed Pack Prepare liquid crystal compositions consisting of the following compounds. C3H7—CH2-h ^) _ c〇〇 __ ^ _ -CN 8% C2H5-〇 ~ CH2- ^ F > _ ^ gy_c〇〇__ < § ^-CN 5% C5H1T ~ 〇 ~ CH2- ^ H > Hg > __ c〇〇_ F 1 --- CN 5% C3H7 ~ KE ^^ CN 10% 6% This paper scale is applicable to China National Gradient (CNS) A4 specification (210X297mm) _ V. Creation instructions ( 20) C7 D7 C4H9- < 〇 > ^ H ^ F 6% c3h7-^ (h)-< T > ~ c4h9,., 10%. Ί C3H7- ^ T) — < ^ > —0 —C2H5 6% CgH-y——CH3 1 0% C2H5- ^ g > —CsCHg ^ -CH3 6% ^-^ O ^ -C ^ C-^-CgHT 3 12% C4Hg- < g) —C = C- < Q ^ -C4H9 6% c3h7-^ (F > —ch2ch2 ^ (〇) —c ^ c— < §) ^-c2h5 5% c3h7 ^ (P > —ch2ch2-h ^) — c = c- ^ 〇) —c2h5 5% (_Please read the notes on the back of t *-before filling this page) J \ s Ministry of Economic Affairs Central Falcon Bureau Negative Work Consumer Cooperative printed the composition with a clear point of 13 · _. 5 ° C, viscosity at 2 0 ° C 2 5. 4 rp Pa. S, optical anisotropy at 25 ° C. 166, limiting voltage 1. 4_9V, and d = 3 8 (r ----------...-% / ° C) 〇Example 5: Preparation of a liquid crystal composition consisting of the following compounds.

The size of this paper is applicable to the Chinese National Standard (CNS) A4 * l grid (210X297mm) V. Creation instructions (2l · C7 D7

F

C3H7-0-CH2- < g ^ C00 ^ 〇 > -CN

, F

C5H1 Ί-. -CH2—CH—CH2— ^ ~~ ⑶ CH3_CH = CH-CH2-CH2- ^ H)-< g > -CNC2H5 ~ < § > _C〇〇 '^ 2) _CN C3H7- < g ^ -COO-

Printed C3H7_ < H C5H11 -Xh) -COO- < 〇 > -F c7hi s- ^ yc〇〇- ^ ~ F C3H7-KE > X5) -C4H9 C2H5_ < © ^ _C ^ C * ^ _ ~ 〇—% C3H7- < H) -CH2CH2- ^ gh-C = C-^)-C2H5 c3h7- < ^ ch2ch2-< 0 > -c = c- ^ 〇) -C3H7 c3h7- / h >-< ^ c ^ c- < 〇 > -c2h5 C3H7- ^ Hy- < ^ > -C = C- < g > -C3H7 8% 8% 7% 7% 8% 4% 10% 5% 5% 10% 8% 5% 5% 5% 5% (please read the notes on the back of the fund before filling this page)

T pack. The size of the bound paper is in accordance with the Chinese National Standard (CNS) A4 (210X297mm) 24-C7 D7 5. Creation Instructions (22) The clear point of the composition is 73.4. (:, At 2 0 Viscosity at ° C r * 2 8 — Ο iP a. S, optical anisotropy at 2 5 ° C 0. 15 1 and limit voltage 1. 3 3 V. The limit electric potential of the composition ^- --- --------------- 'The temperature dependence of pressure is expressed as β = 0 · _3 2 (% / ° C). Example 6 Preparation of liquid crystal composed of the following compounds Composition. Indo-F C2H5-〇-CH2- < g > -CO〇r ^ -CN 10% C3H7—0—CH2 — ^ > —GOO — ^^ -CN 10% 5% C4H9 ~ KI ^)-< §) -CN 5% c2h5- < EKEh§ > -cn 7% C3H7- < EKE >-C4H9;, ... 10% C2H5 ~ < 〇 > * < § > -C2H5 5% C3H7'h (^) _ < © > _C2H5 5% C4H9 ~ K〇)-^ §) —C2H5 5% C3H7- (5) KEH§) _CH3 10% (Please read the notes on the back of the fund before filling this page)

T Pack · The size of the paper used in the Chinese version (CNS) A4 specifications (210X 297mm) A7 B7 V. Description of invention (23) C3H7- (i) _CH2CH2- < g > -C = C- ^ > -C2H5 C3H7- ^ H ^ > —CH2CH2— {〇) —C = C ^ @) — C3H7 C3H7— < (H ^ -CH2CH2- ^ HC = C- < 〇) K-C4Hg 11 % 6% 6% 5% The clear point of the composition 8 J) ______ 9 _ ° C, the viscosity at 20 ° C 2 3. ^ 1 m P a. S, the optical direction at 25 ° C The opposite sex r 'Ο. 1 4 IL, and the limit voltage 1. 4 6V. Example 7: Preparation of a liquid crystal composition composed of the following compounds.

~ ^ 〇) ^ COO— < ^^-CN CH3 —O—CH2-n (pHg) -COO- {§) —

-CN (please read the precautions on the back before filling out this page)

, Printed by 1T Employee Consumer Cooperative of Central Bureau of Standards, Ministry of Economic Affairs

c2h5-o-ch2-XT ^ 〇 ^ -coo: C2H5 ~ < §Hg > ^ CN C5H11- < 〇H5 > -CN C5H11 ^ 〇H§ ^ -F C2H5- < EHgHQ ^ F

/ Fi〇y ~ cN 7% 5% 5% 7% 6% 5% 8% The paper size is in accordance with Chinese National Standard (CNS) A4 specification (210X297 mm) A7 A7 Central Bureau of Economic Affairs Employee Consumer Cooperative Printed B7 V. Description of the invention (24) C3H7 ~ K5) ^ © ^-^ — F 7% C3H7 F 5% C5H11 ~ < ^ KH) -CO〇Hg > -F 5% C3H7- < lKE > -C4H9 10% C2H5 ~ C ^ C—CH3 5% ^ 3— < §) —C = C-hQ) —C6H13 10% C4Hg—C = C— (〇) —C4H9 5% c3h7-^ (¥) —ch2ch2— < § > —c ^ c— < g > —c2h5 5% CgH-y——CH2CH2——C three C— (O ^)-C3H7 5% The clear point of the composition is 77.8. (:, Viscosity at 2 〇 ° C, ~ —- 2 Pa. S, optical anisotropy at 2 5eC 0.170, and the limit voltage of 1.5 IV. C, ~-by the above control example And examples found that the liquid crystal composition of the present invention has a reduced temperature dependence of the limit voltage, while having a suitably improved optical inspection. Violation> anisotropy and reduced viscosity. Therefore, the use of the composition can be achieved to meet the actual ~ '-- / 'Liquid crystal display devices for application needs, namely low voltage drive capability, reduced temperature dependence and high-speed electro-optical response. Although the present invention has been described in detail with reference to special cases, those skilled in the art understand that various methods can be carried out without departing from the spirit and scope of the present invention Changes and improvements. This paper scale is applicable to China's national rubbing rate (〇yang> People 4 specifications (2〗 0 侂 297 嫠)) _ 27 ^ 3. -5 (Please read the precautions on the back before filling this page)

Claims (1)

Ο 4 Amendment I to fill in the scope of patent application. The general formula of the attachment (less one of the second kind) is selected from the following composition: Patent Application No. 84 1 04385. Amendment of the scope of patent application in Chinese. Amended in September 1985. A liquid crystal composition Each of which contains a first component composed of at least one compound selected from the following compounds I), a component composed of a compound selected from compounds of the following general formula (II), selected from at least one The third component consisting of the compounds of the following general formula (III) to (V) and the fourth component consisting of at least one compound of the general formula (VI) and (VI I): R1 —〇—CH (I) Where Ri table has an alkyl group with 1 to 8 carbon atoms: η table 0 or 1: (II) Printed by the Negative Consumer Cooperative of the Central Standardization Bureau of the Ministry of Economic Affairs where R2 and R3 have 1 to 8 carbon atoms in each table Atomic alkyl group: L table F or H; Q table one CH2CH2 —or single bond: (III)? 5—A2—Z2 — (-A3—Z3 ^ p (IV) This paper scale is applicable to China National Standards (CNS) A4 specification (210X297mm) A8 B8 C8 D8 Patent scope R6 ~ z4 ~ hrArz5-^^ (V) where in the formula, R4 table has an alkyl group of 1 to 8 carbon atoms, one of which CH2 group can be Oxygen atom or one CH = CH_ substitution: m table 0 or 1: octa table 1 trans-1,4-cyclohexyl, 1,4-phenylene or trans-1) 3 —dioxane-2,5 —Diyl; Zα table one C00 —or single bond: X table F or Η, the prerequisite is when Zi is a COO —, X is Η: In formula (IV), R 5 table has 1 to 8 carbon atoms Alkyl; Ρ table 0 or 1: Α2 table trans-1,4-cyclohexyl, 1,4-phenylene or pyrimidine-2,5-diyl: Α3 table trans-1,4-cyclohexyl Or 1,4 phenylene: Z2 table 1, CH2CH2-, —CH = CH-or single bond : Z3 table one C00 —or single bond; T table F or H; S means or Ci; in formula (V), R6 table has a base of 1 to 8 carbon atoms: C1 table 0 or 1: A4 table trans -1,4-—cyclohexyl or 1,4-phenylene; Z4—CH4CH2—, -CH = CH-or single bond; Z5, -CH2CH2-or single bond: • Please read Note I on the back side before binding Printed by the Beigong Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs *. R Guang A5 {-A6-) ^-Z6—A7—Ra R9- < §) -C = C— © -R10 (VI) (VII) where ( VI), R7 represents an alkyl group having 1 to 8 carbon atoms: R8 represents an alkyl group or alkoxy group having 1 to 8 carbon atoms or an alkoxymethyl group having 2 to 8 carbon atoms: r table 0 Or 1: Eight, five tables, trans 1.1.1, 4 The paper size is in accordance with Chinese National Standard (CNS) A4 (210X297mm). Printed by the Central Bureau of Economic Development of the Ministry of Economic Affairs, Zhengong Consumer Cooperative. , 1, 4, 4-phenylene or estro-2'5-diyl; As and A 7 each table trans-1, 4-cyclohexyl or 1, 4-phenylene; Z 6 table one C 00-or Single bond; In formula (VI I), R9 represents an alkyl group having 1 to 8 carbon atoms: R Table 10 has alkyl or alkoxy groups of 1 to 8 carbon atoms; wherein the mixing ratio of the first, second, third and fourth components relative to the total weight of the four components is Weight timings are individually 3 to 50%, 3 to 35%, 10 to 60% and 10 to 60%. 2. The liquid crystal composition according to item 1 of the patent application scope, wherein the second component is composed of at least one compound selected from compounds of general formula (I la) and (I lb): R R11 'XE ^ CH2CH2' ~ (2) ~ CSC- ^ §) ~ R12 (Hb) where Ru and R12 each have an alkyl group with 1 to 8 carbon atoms. 3. The liquid crystal composition according to item 1 of the application scope, wherein the compound of formula (I I I) is at least one compound of general formula (I I IA): 〇) —C = c- ^ 〇S— (Please read the precautions on the back before filling in this page) Order R 12 (Ha) where R13 table has an alkyl group with 1 to 8 carbon atoms; X table F or Η ° 4. For example, the liquid crystal for patent application item 1 Composition, wherein the compound of formula (VI) is at least one compound of general formula (VI Α): This paper scale is based on the Chinese National Standard (CNS) A4 specification (210X297 public daughter) --Λ-. S042Q4 A8 B8 C8 D8 6. Patent application scope R 5 (VIA) where R14 represents an alkyl group with 1 to 8 carbon atoms; R15 represents an alkyl group or alkoxy group with 1 to 18 carbon atoms, or 2 to 8 carbon atoms Alkoxymethyl: v and w each represent 0 or 1, the prerequisite is that when either v or w is 0, the other is 1. 5. The liquid crystal composition according to item 2 of the patent application scope, wherein the compound of formula (I I I) is at least one compound of general formula (I I I A): (ΙΙΙΑ) I .. · I where R13 represents an alkyl group having 1 to 8 carbon atoms: X represents F or Η. 6. The liquid crystal composition according to item 2 of the patent application, in which the compound of formula (VI) is at least one compound of general formula (VI Α): nr. Read it first. Then fill in this page to set the central standard of the Ministry of Economic Affairs R15 (VIA) printed by the Bureau ’s Consumer Cooperatives, where Ri4 has an alkyl group with 1 to 8 carbon atoms; R15 has an alkyl or alkoxy group with 1 to 8 carbon atoms, or has 2 to 8 carbons_ Atom alkoxymethyl; v and w each represent 0 or 1, the prerequisite is that either V or w is 0, and the other is 1. 7. The liquid crystal composition according to item 3 of the patent application scope, wherein the compound of formula (VI) is at least one compound of general formula (VIA): This paper wave scale is used in China National Standard (CNS) Λ4 specification (210X297mm) 8 888 ABCD 304204 VI. Patent application scope R14- ~ KE > ^ 7 < E ^ < ^ rR1S (VIA) a (please read the precautions on the back before filling in this page). 'I where R14 form has 1 to 8 Alkyl groups with one carbon atom; R15 represents an alkynyl group or an alkoxy group with 1 to 8 carbon atoms, or an alkoxymethyl group with 2 to 8 carbon atoms; v and w each represent a 0 or 1 with the prerequisites being When either v or w is 0, the other is 1. 8. The liquid crystal composition according to item 5 of the patent application scope, wherein the compound of formula (VI) is at least one compound of general formula (VIA): R14-CVIA) • 1 wherein R14 represents an alkyl group having 1 to 8 carbon atoms : R15 represents an alkyl or alkoxy group having 1 to 8 carbon atoms, or an alkoxymethyl group having 2 to 8 carbon atoms; v and w each represent 0 or 1, and the prerequisite is that any of v and w When one is 0, the other is 1. Printed by the Beigong Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 9. If the liquid crystal composition of the first item of the patent application scope, the first, second, third and fourth components are relative to the four groups The mixing ratio of the total weight of the parts is 5 to 30%, 5 to 25%, 15 to 40%, and 20 to 50% at the reset timing. 1 0. The liquid crystal composition according to item 2 of the patent application, wherein the first, second, third and fourth components are timed by weight relative to the total weight of the four components The mixing ratios are individually 3 to 50%, 3 to 35%, 10 to 60% and 10 to 60% ° _ This paper size is based on China National Standard (CNS) A4 (210X297mm)] A8 30 ^ 204 g * ~, the mixing ratio of the total weight of the patent application range is 5 to 30%, 5 to 25%, 15 to 40% and 20 to 50% by weight. 1〇. The liquid crystal composition according to item 2 of the patent application scope, wherein the first, second, third and fourth components are reset with respect to the total weight of the four components The mixing ratios are individually 3 to 50%, 3 to 35%, 10 to 60% and 10 to 60%. 1 1. The liquid crystal composition as claimed in item 2 of the patent application, wherein the mixing ratio of the first, second, third and fourth components relative to the total weight of the four components is measured by weight Individuals are 5 to 30%, 5 to 25%, 15 to 40% and 20 to 50%. 12. The liquid crystal composition of item 1 of the patent application scope is used in electro-optic display devices. --Γ -------- A-- (I first read the note $ item on the back and then fill out this page) Thread f Printed by the Central Bureau of Economic Affairs of the Ministry of Economic Affairs Beigong Consumer Cooperative. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210x297 public envy)